=over

=item ${^TAINT}
X<${^TAINT}>

Reflects if taint mode is on or off.  1 for on (the program was run with
B<-T>), 0 for off, -1 when only taint warnings are enabled (i.e. with
B<-t> or B<-TU>).

This variable is read-only.

This variable was added in Perl v5.8.0.

=back